Spa shell



FIG. 1 is a first perspective view of a spa shell showing our new design;

FIG. 2 is a second perspective view of a spa shell showing our new design;

FIG. 3 is a top plan view of a spa shell showing our new design;

FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 3;

FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 3;

FIG. 7 is a cross-sectional view taken along 7-7 of FIG. 3;

FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 3;

FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. 3;

FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 3; and,

FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. 3.

The broken-line disclosure in the views represents portions of the article in which the claimed design is embodied, but which form no part of the claimed design. 

CLAIM The ornamental design for a spa shell, as shown and described. 